Thomas s



T. S. LAMBERT.

NPEIERS, PHOTO-LITHOGRAPMER. WASHINGTON. D c.

UNITED STATES PATENT OFFICE.

THOMAS S. LAMBERT, OF NEW YORK, N. Y.

TRAMWAY-RAIL.

SPECIFICATION forming part of Letters Patent No. 226,864, dated April 27, 1880.

Application filed September 15, 1877.

To all whom it may concern:

' Be it known that I, THOMAS S. LAMBERT, of the city, county, and State of New York, have invented a new and useful lmprovement in Street-Tramways, which improvement is fully set forth in the following speciiication and shown in the accompanying drawing.

The object is to secure smooth hard continuous wheelways for vehicles of every kind, so constructed as to prevent, also, the slipping oi' the horse or horses when stepping upon them.

The invention consists in the combination of transverse grooves or like devices with a rail concave upon its upper surface, the transverse grooves extending down into the concavity of the rail and partially or wholly across it.

The figure represents a perspective view of a rail with its upper surface slightly concave from side to side.

H is a continuous portion of the flange F; but when only a rail (represented by the-lower half ofthe gure) is used the wide flange His not needed, but that side ofthe rail should be made as the opposite side is herein represented to be constructed.

As the longitudinal groove is shallow and the width of the rail must be practically four to eight inches, a horse could only with (lifticulty maintain his footing unless the transverse groove A should extend partially or, as shown at G, quite across the horizontal concavity of the rail.

The upper halt' of the figure shows a iiange, F, rising vertically from E upon one side of the cavity, which is excavated more deeply at that side than it is upon the other side. In fact, the two halves (the upper and the lower) may be considered as two sections of two different rails.

D represents transverse grooves, extending across the rail to E, then up t-he perpexldicular inside of the ilange F. G represents a slmlar groove, also extending partially across the flange F and down the outside of the iiange. These grooves maybe more or less oblique, or may intersect each other.

l do not in this application make any claim in regard to the especial points or lmprovements shown in the upper halt' ot' the figure, and described herein, as I intend to makentlie same the subjectmatter of a separate applica` tion for Letters Patent.

What I claim as new, and desire to secure by Letters Patent, is-

lhe combination of transverse grooves or like devices with a rail concave upon its upper surface, the transverse grooves extending down into the concavity ot' the rail and partially7 or wholly across it, substantially as described and shown. y

T. S. LAMBERT.

Witnesses:

JNO. D. PATTEN, W. T. HUTcHINsoN. 

